Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X75-40S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X75-40S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 75mm stroke, 1/4" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ50 mm
- Stroke75 mm
- Port size1/4"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X75-40S
Production lines rarely keep the stroke they were drawn with, which is why this MACJ50X75-40S lets the extend travel be set on site anywhere inside a 40 mm window. Underneath sits a 50 mm bore making 981 N of push at 0.5 MPa and 200 kgf theoretical at 1.0 MPa, housed in a riveted stainless round body with aluminium-alloy covers and a 20 um chrome-plated rod. Both ends carry a variable air cushion to absorb the last of the load energy.
Budget roughly 589 N for the actual job at 0.5 MPa; that is the honest working figure once a realistic margin is kept. On the lift side it will raise about 50 kg vertically with a 2:1 margin. The magnet ships installed, CMSG / DMSG / EMSG switches simply clamp on, and porting is 1/4" on both covers.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X75-40S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X75-40S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 75 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Variable air cushion, both ends |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 881 N |
| 0.7 MPa | 1374 N | 1234 N |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X75-40S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×75 | Stroke length in mm. |
| -40 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X75-40S Is Used
Fixture clamp on a CNC pallet
Clamps aluminium blanks on a machining pallet; the 40 mm window absorbs fixture build tolerances without re-machining.
Carton flap tucker
Folds the last flap on a case-packing head, twin cushions keeping the motion quiet at full line speed.
Hinge staking cell
Stakes small hinges in a hardware assembly bench using about 589 N of practical force at 0.5 MPa.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X75-40S the Right Cylinder?
If 628 N from a 40 mm bore falls short but 1558 N from 63 mm is more than the fixture needs, the 981 N of this bore is the natural fit. The 40 mm window gives commissioning room when fixture tolerances are still unknown. Remember the trim is an end stop for the extend stroke, not a load-holding brake: with the air off, the rod still yields to back-drive. FA flange and LB foot carry the body, while I or Y knuckles suit swinging linkages.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X75-40S FAQ
Rated 981 N push and 881 N pull at 0.5 MPa, climbing to 1374 N push and 1233 N pull at 0.7 MPa. The theoretical ceiling is 200 kgf at 1.0 MPa. Working pressure is 0.15-1.0 MPa (22-145 psi) and proof pressure 1.5 MPa (215 psi).
A high-precision stainless-steel barrel with aluminium-alloy front and back covers riveted on, plus a carbon-steel piston rod hard-chrome plated to 20 um. That round riveted build resists mild corrosion and washdown, and at this bore the ports are 1/4" with a 16 mm rod.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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